Form for concrete walls



March 29, 1932. D. F. MILLER 1,851,399

FORM FOR CONCRETE WALLS Filed Nov. 23, 1928 3 Sheets-Sheet 1 March 29,1932. D. F. MILLER FORM FOR CONCRETE WALLS Filed Nov. 23, 1928 5Sheets-Sheet 2 I alto b142 March 29, 1932. 3. 1,851,399

FORM FOR CONCRETE WALLS Filed Nov 23, 1928 3 Sheets-Sheet 3 (QM-neuter,

Patented Mar. 29, 1932 PATENT OFFICE nnLBnRT I. MILLER, or BAYI-OR,MONTANA roan FOR CONCRETE WALLS 7 Application filed November 23, i928No. 3 2 1,3

This invention relates to means for erectin}; walls of Concrete andhasfor its object the provision of very simple and inexpensive farmswhereby a hollow wall of concrete or 3 similar material fnay be readilyerected at a comparatively low cost. The invention is illustrated in'theaccompan'ylng drawings and consists 1n oertaln novel features which willbehereinafter fully set forth and defined. m p In the drawings "Figure 1is a perspective view showing the fq'nns in position within and aboutiacompleted course of a wall,

Fig. ais a similar view showing a partly completed wall with the formsarranged to shape an upper course,

Fig. 3 is a sectional elevation. taken longitudinally of one of thecores, 7

Fig. 4 is a transverse section on the line 4 4 of Fig. 3,

of Fig. :3,

Fig; 6 is an elevation showing door and window frames in place,

Fig. 7 is a section onthe line 7-7 of Fig. 6, Fig. 8 is' a plan view ofa' corner showinga slight-modifieat ion, and

Figs. 9,10 and 11 are details showing caps 'which may be applied to thecores.

In carrying out the present invention, there are provided outer andinner side form members 1 and 2' which niay conveniently beplanks ofsuitable dimensions and having flat opposed surfaces. Theseformnleni'bers are set on edge in parallel relation and metal tubes 3'are disposed between then] at intervals, retaining bolts 4 beinginserted through the tubes and having washers 5 and nuts6. fitted upontheir ends against the outer sides of the form members so that byturning the nuts home the several parts will be seeured,as will beunderstood upon reference to Fig. 4. j

Washers or plates 60 are countersunk in the Fig-1 5 is a transversesection onthe line 55 forms rigid against lateral movement eitherinwardly or outwardly. At the inner side of the wall to be erected, theinner Ineinbers '2 form a but-t joint at a corner but atthe outer sidesone form member 1 has openings through which lugs 7 on the meetingmember may rojectand suitable fastening devices as 8, are insertedthrough the lugsso that the form members will be held togeth r tofretainthe concrete while it is setting. On the inner surfaces ofthe formmenibersl at the meet: ing points thereof, recesses e may be forinedwhereby an offset10 will be produced injthe finished wall to impartstrength and an at"- tractive appearance to the corner of thewall. Theouter form also be more entended or elongated than the innerform'fasshown at 70, and provided with openings 71 for use in extendingthe wall to adda room to;

existing structure, the retaining bolts being inserted through saidopenings 71 and" through the openings left in the previously erectedwall. The form members may be as long as the wall to be erected but theymay; be more readily" handled if cut obliquely between their ends, asindicated at 61...

The forms set up as thus described are sufficient if a solidwall is tobe erected, and the" green concrete is poured into the space between thefo'rins and tamped according to the usual practice. After the concretehas set',.the washersb, nuts 6 and bolts 4' are withdrawn, leaving thetubes 3 within the wall. The forms are then raised and placed inposition for a second course, and the. op eration is repeated until thewall hasreached the desired height, as will be understood. In settingthe forms for an up er course, the lower bolts't are inserted throughthe upper tubes 3 left in the poured wall, the lo'wertubes"beingwithdrawn' and again used between the side forms. If the tubeslbecoated with pea aflin' o'rsorne siniilar substance before being innerfaces of the side formsand the tubes placed in the forms, theyrnay'beea'sily with-' 3 abut the same, as shown in Fig. 4,so' that drawsafte -meanders has set, the open-r their ends willbe flush withthewallsa'nd tubes" equal in length to the thickness of the wall may" beused, subsequent cutting of the ends of the tubes being thereby Ina'd'eunnecessary. The arrangement also holds the built in as many courses asnecessary to produce a basement of a desired height when the building isto have a basement, the solid wall, of course, forming a base for thesuperstructure.

The walls of the superstructure will preferably have dead-air spaces orchambers therein'to obtain the benefit of heat insulation which a hollowwall or a wall with deadair chambers possesses, and, for, this purpose,I provide cores 11 whichare supportedby and between the form members 1and 2, so that, when the concrete is poured into the space between'themembers 1 and 2, some part of that space will be found to be occupiedby. the. cores and, consequently, hollow portions or chambers will beformedin the concrete, the concrete wall being indicated in theaccompanying drawings: by the numeral 12. The cores'include bottomplates 13,

thee'dges of which project somewhat beyond the sides of'the core sidemembers to which they are secured, as shown in Figs. 4 and 5.

vThe two side members of a core each comprises two nearly righttriangular sections 110 having their meeting facesdisposed diagonally,as'shown' at 14, and provided in their ends with notches 15 whereby-theymay be engaged over upper, tubes 3, as will be understood upon referenceto Fig. 3. A plate 16 is disposed over the top edges of the coresections and extends the full length of the core,fand upon the upperside of this plate 16 'are secured cross bars '17 which project beyondthe sides of the plate andare adapted to rest upon'the edges of the formmembers 1 and 2 and may be removably secured thereto in 7 any approvedmanner. The plate 7 16 should be arranged symmetrically upon thecorewith its: edges projecting beyond the sides of the core and alinedvertically with the edges of the plate 18; The concrete is tamped aroundthe cores between the side form members and will fit close to the sidesof the cores between the projecting edges of the plates 13.and 16 andwhen the concrete has set and the cores removed,.it will be found thatnot only is a hollow chamber present in the wall but at the top of saidchamber is a rabbeted or shouldered structure 160 adapted to receive andsupport the plates 13 when a succeeding course is 'to be formed. Afterthe core members, have been disposed between the side forms and engagedwith the tubes 3, the plates 13 carrying the core members 110 are forcedoutward by spreaders, as wedges 130, so as to abut the sides of therecess16 0. The wedges may extend up ward through slots infthe top plate16, but

'a more convenient arrangement is to suspend I the wedges on lag screwsmounted in the, topplates 16. To prevent relative displace ment of thesections 110, lag screws 133 are thenfd'riven vertically through thecross bars 17,th e top plates 16 and the members 110, 7

and the ends of the cross bars are secured to the side form members 1and 2.

, Some concrete will tend to enter the notches in the ends of the coreand fill the same so I vided in oneend to the cap to fit to the tube 3.The space between the ends of the core sections is covered by a cap 21of similar material and of proper shape and dimensions to "entirelycover the end of the core. It will,

of course, be understood that two or more .coreszmay be arranged end toend to produce a dead-air space extending approximately the full lengthof the'wall, and caps 22 are pro vided to cover the alined notches inthe meet-,

ing ends of adjacent cores. If a glazed ma.- terial be used for thesecaps, the glazed side being placed outward they may be removed and'usedmany times. v

After a course has set and the cores are to be removed, theseveralscrews are'wlthdrawn and the cross bars 17 and the covers 16 areremoved. The several members of the core may then be successivelymoved-inwardan'd thenij'endwise to be freed of the respective tubes andeasily withdrawn. The side formsare then raised and all the parts resetfor the formation of another course.

In erecting the wall, door and window openings will, of course, beprovided. For this purpose, I provide forms consisting of planks 25 setbetween the side forms 1 and 2 at the points where the door and windowopeningsare to be located. These form members have a combined width lessthan the thickness of the wall being erected but they are so'arrangedthat their outer. edges abut the members 1 and 2, as shown in Fig.7.Over the inner edges of the members 25 are secured strips 26 forming agroove which the concrete fills to key the parts in position, as

shown in Fig. 7 The elements 26 format shoulder to which the ordinarydoor oriwin dow frame maybe readily attached.

The dead-airchambers may, of course,be

provided only in the sidelengths of the wall and terminate short of the.corners, as shown in Fig. 1, but, as shown in Fig 8, there may I be aplurality of'ventilating spaces or chamber's 24: which are disposed inparallelism within therespective branches of the wall. andextendintothecorners ofthe same, there- V by obtaining perfect insulation at thecorners; 7

as well as in the length of the wall.

claim .Having thus'des'cribed the inventi m-JI:

1. In forms for concrete work, side form members, tubes disposedbetweensaidside form lmembers, means cooperating with said tubestomaintain the side form mernhers in parallelism, cores supported by andbetween the side form members and provided at their ends with notches toengage said tubes, and caps fitted over the ends of the cores to coversaid notches.

2. In forms for concrete work, a core comprising side members, reststherefor supported in seats provided in a finished course, means forlocking the rests in the seats, and a cover extending over the upperedges of the side members and projecting beyond the same to form seatsin a second course.

3. A frame for concrete work including spaced form members havingregistering openings, connecting and spacing means at intervals in thelength of the form members, and coacting core members between twoadjacent connecting and spacing means and provided at their ends withnotches seating around said spacing and connecting means, each coremember comprising sections diagonally jointed.

4. A frame for concrete work including spaced form members, a sectionalcore therebetween comprising side members and a cap plate extending overthe side members and projecting beyond the ends thereof, and cross barsin the length of the core extending over the cap plate and the formmembers and secured at their ends to the form members above through thetop plate to cause the bottom plate sections to firmly engage in apreviously formed seat.

I In testimony whereof I aflix my signature.

DELBERT F. MILLER. [L. s]

two similar

